WO2021157733A1 - Corps composite multicouche pour coussin de sécurité gonflable et coussin de sécurité gonflable - Google Patents

Corps composite multicouche pour coussin de sécurité gonflable et coussin de sécurité gonflable Download PDF

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Publication number
WO2021157733A1
WO2021157733A1 PCT/JP2021/004459 JP2021004459W WO2021157733A1 WO 2021157733 A1 WO2021157733 A1 WO 2021157733A1 JP 2021004459 W JP2021004459 W JP 2021004459W WO 2021157733 A1 WO2021157733 A1 WO 2021157733A1
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Prior art keywords
resin
layer
airbag
polyamide
base fabric
Prior art date
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PCT/JP2021/004459
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English (en)
Japanese (ja)
Inventor
己行 伊東
拓海 壁谷
Original Assignee
旭化成株式会社
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Publication date
Application filed by 旭化成株式会社 filed Critical 旭化成株式会社
Priority to JP2021576204A priority Critical patent/JP7308991B2/ja
Priority to EP21750362.2A priority patent/EP4101634A4/fr
Priority to US17/760,031 priority patent/US20230052516A1/en
Priority to CN202180010262.4A priority patent/CN115003562A/zh
Publication of WO2021157733A1 publication Critical patent/WO2021157733A1/fr

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Definitions

  • the present disclosure relates to a multi-layer complex used for an airbag for protecting an occupant of a vehicle or the like (hereinafter, a multi-layer complex for an airbag) and an airbag using the same. More specifically, the present invention relates to a multilayer composite for airbags having excellent airtightness, adhesiveness, and durability in which a multilayer film is laminated on the surface of synthetic fibers, and an airbag using the same.
  • airbags mounted on vehicles have been put into practical use for the purpose of protecting occupants from impacts.
  • airbags that can handle head-on collisions include front airbags and knee airbags that protect the head and legs of occupants.
  • an airbag that responds to a collision from the side surface there is a side airbag for protecting the fuselage of the occupant.
  • side curtain airbags and the like for protecting the occupant's head when the vehicle rolls over and preventing the vehicle from being released to the outside of the vehicle have also been put into practical use. And such various airbags have become widespread in response to increasing safety awareness.
  • the required performance of these airbags differs depending on the assumed dangerous conditions. For example, front airbags need to continue to inflate only at the moment of collision, while side curtain airbags need to continue to inflate for a longer period of time than the former in order to prevent them from being released outside the vehicle when they roll over. be. Therefore, the multilayer composite for airbag itself is required to have higher airtightness.
  • the multilayer composite for an airbag is composed of a base cloth (for example, a synthetic fiber layer composed of synthetic fibers) and an airtight layer.
  • the base fabric is a layer that serves as a support for maintaining a particular tertiary structure when the bag-shaped cushion, which was stored in a folded state until the time of a collision, is unfolded.
  • synthetic fibers made of polyamide fibers or polyester fibers are used for this layer.
  • the base cloth itself made of these synthetic fibers is poor in airtightness, it is difficult to quickly deploy the cushion in the folded state and to maintain the expansion for a required time. Therefore, in order to provide airtightness, it generally has a structure in which an airtight layer is formed on one surface of the base cloth.
  • Examples of the technology related to such an airtight layer include a coating type multilayer composite for airbags coated with a thermosetting silicone film and a film-laminated type multilayer composite for airbags coated with a resin film. Be done.
  • the present disclosure relates to a multilayer film for an airbag in which the latter resin film is laminated, and Patent Documents 1 and 2 disclose related techniques.
  • the acid-modified polyolefin is used for the adhesive layer.
  • the adhesive layer has poor affinity with polyamide fibers or polyester fibers, and the adhesive strength at the interface between the adhesive layer and the base fabric is low. Therefore, when the airbag expands rapidly (also referred to as unfolding), interfacial peeling between the adhesive layer and the base fabric is likely to occur.
  • Patent Document 2 discloses a technique using a low melting point polyamide elastomer composed of polyamide 12 (hard segment) and polyether (soft segment) for the adhesive layer of the multilayer film.
  • a technique using a low melting point polyamide elastomer composed of polyamide 12 (hard segment) and polyether (soft segment) for the adhesive layer of the multilayer film.
  • the affinity between the base fabric and the adhesive layer is improved, but in order to lower the melting point of the adhesive layer (for example, 150 ° C. or lower), it is necessary to relatively increase the copolymerization ratio of the polyether.
  • the melting point of the adhesive layer for example, 150 ° C. or lower
  • a scrub test is one of the methods for evaluating the tolerance for such repeated loads, that is, the durability.
  • the scrub test evaluates the number of times the coating layer or resin film (also referred to as a multilayer film) is peeled off or damaged from the base fabric by simultaneously repeating expansion and contraction and friction on the airbag multilayer composite. This is a load test method.
  • the present disclosure provides a multi-layered composite for an airbag having excellent durability and an airbag using the same by controlling the flexibility and the adhesiveness between the adhesive layer and the base fabric within a predetermined range. With the goal.
  • the present disclosure has been made in view of the above problems, and surprisingly, it has been discovered that the flexibility of the multilayer film has a strong influence on the durability as a factor other than the adhesiveness, and further, the multilayer film It has been found that the durability is improved by setting the balance of flexibility of both the base cloth and the base cloth within a specific range, leading to the following disclosure.
  • the present disclosure discloses an interface between the multilayer film and the base fabric in a multilayer composite for an airbag having a base fabric and a multilayer film including an outer layer and an adhesive layer bonded to one surface of the base fabric.
  • the adhesive strength of the adhesive layer is 5 N / cm or more
  • the difference in loop stiffness between the air bag multilayer composite and the base fabric is 130 mN / cm or less
  • the adhesive layer has a hydrogen bonding ability.
  • It is a multilayer composite for an airbag, which comprises the first resin to have, and has an absolute value ( ⁇ HSP) of a difference between the Hansen solubility parameters of the base fabric and the first resin of 5 MPa 0.5 or less. .. (" ⁇ " represents the Greek letter delta.)
  • the first resin is two or more polyamide-based copolymers and / or dimeric acid-based polyamides selected from polyamide 6, polyamide 66, polyamide 610, polyamide 11, and polyamide 12. Is preferable.
  • the glass transition temperature of the first resin is preferably 20 ° C. or higher.
  • the outer layer of the multilayer film contains a second resin and has a melting point higher than that of the first resin contained in the adhesive layer by 20 ° C. or more.
  • the second resin is preferably a polyamide-based copolymer and / or a thermoplastic polyamide elastomer, a thermoplastic polyester elastomer, or a thermoplastic polyurethane elastomer.
  • a polyolefin resin having an intermediate layer between the outer layer and the adhesive layer of the multilayer film, the intermediate layer containing a third resin, and the third resin having polarity is used. It is preferable to include it.
  • the average thickness of the multilayer film is preferably 40 ⁇ m or less.
  • the base cloth is a polyamide fiber.
  • the present disclosure is an airbag using a multilayer composite for an airbag to which the multilayer film according to any one of [1] to [8] is bonded.
  • the present disclosure by controlling the flexibility and the adhesiveness of the interface between the adhesive layer and the base fabric within a predetermined range, it is possible to provide a multi-layer composite for an airbag having excellent durability.
  • the weight of the airbag can be reduced by using the multi-layered composite for the airbag having excellent durability.
  • FIG. 1 is a schematic view showing an adhesive strength test.
  • FIG. 2 is a schematic view showing a loop stiffness test.
  • FIG. 3 is a schematic view showing a film forming method of a multilayer film.
  • FIG. 4 is a schematic view showing a method for manufacturing a multilayer complex for airbags.
  • the multilayer complex for airbags of the present disclosure has a base fabric and a multilayer film including an outer layer and an adhesive layer bonded to one surface of the base fabric.
  • the adhesive strength at the interface between the multilayer film and the base fabric is 5 N / cm or more, and the difference in loop stiffness between the multilayer composite for airbag and the base fabric is 130 mN / cm or less.
  • the absolute value ( ⁇ HSP) of the difference in the Hansen solubility parameter between the base fabric and the first resin having a hydrogen bonding ability contained in the adhesive layer of the multilayer film is 5 MPa 0.5 or less. This makes it possible to provide a multi-layered composite for airbags having excellent durability.
  • a multilayer complex for an airbag is also simply referred to as a "multilayer complex”.
  • the multilayer composite for airbags of the present embodiment is a film body having a base cloth (for example, synthetic fiber) and a multilayer film coated on one surface of the base cloth.
  • the airbag in the present embodiment is preferably a bag formed from the multilayer composite for airbags.
  • the multilayer film of the present embodiment is composed of at least two layers, of which one layer that adheres (or is bonded) to the base fabric in the multilayer composite for airbags is referred to as an "adhesive layer", and the other.
  • the layer is called the “outer layer”.
  • the "outer layer” corresponds to a layer exposed to the outside of the airbag.
  • the expression " ⁇ to ⁇ " indicating the range means ⁇ or more and ⁇ or less.
  • the adhesive layer is melted by heating the multilayer film on at least one surface of the base fabric (for example, synthetic fiber), and the adhesive layer is firmly adhered to the surface of the base fabric. can.
  • the base fabric for example, synthetic fiber
  • the lower limit of the adhesive strength at the interface between the multilayer film and the base fabric is preferably 5 N / cm or more, more preferably 6 N / cm or more, and further preferably 7 N / cm or more.
  • the upper limit of the adhesive strength at the interface between the multilayer film and the base fabric is not particularly limited, but is preferably 20 N / cm or less, for example.
  • the preferable range of the adhesive strength the above lower limit value and upper limit value can be arbitrarily combined. Further, since the breaking strength of the multilayer film is lower than the adhesive strength, the thinner the multilayer film, the lower the adhesive strength apparently tends to be.
  • adheresive strength refers to the peeling strength when peeling occurs between the multilayer film covering the surface of the base fabric and the base fabric, and specifically, the base fabric and the multilayer film.
  • a sample of a multilayer composite for an airbag was prepared in which a multilayer film was adhered to a base fabric by partially applying a predetermined temperature, pressure, and time in a state of being stacked.
  • a sample having a width of 10 mm and a length of 80 mm is cut out from the multilayer composite for an airbag, the distance between chucks is set to 30 mm in a tensile tester, and the multilayer film portion and the base fabric portion are formed so that the adhesive portion of the sample is in the center of the chuck.
  • the controlling factors of the adhesive strength include, for example, (a) a chemical bond between the base cloth and the adhesive layer, (b) the contact area between the base cloth and the adhesive layer, and (c) the weft fibers constituting the weft and the warp.
  • This is the anchor effect that appears by sneaking between the single threads of the bundle.
  • the chemical bond can be controlled by using a resin having a hydrogen bond ability and / or by performing corona treatment, plasma treatment, primer treatment, or the like.
  • it can be controlled by the thermal laminating processing temperature, speed, pressure, and melt viscosity of the resin.
  • the adhesive strength at the interface between the multilayer film and the base fabric can be shown to be a specific value or more.
  • one of the preferred examples of this embodiment focuses on the resins having hydrogen bonding ability and defines the solubility parameter between the base cloth and the adhesive layer to determine the difference in adhesive strength and loop stiffness. It is controlled to a specific range.
  • the difference between the loop stiffness of the entire multilayer composite for airbags and the loop stiffness of the base fabric used for the multilayer composite for airbags is not more than a specific value.
  • the “flexibility” here means the relative difference between the multilayer film and the base fabric, and the "loop stiffness value of the multilayer composite for airbag” and the “base” obtained according to the loop stiffness measuring method described later. Expressed as the difference from the loop stiffness value of the cloth alone.
  • the lower limit of the difference in loop stiffness between the airbag multilayer complex and the base fabric is preferably close to 0, but more preferably more than 0 mN / cm, for example.
  • the upper limit of the difference in loop stiffness between the airbag multilayer composite and the base fabric is preferably 130 mN / cm or less, preferably 120 mN / cm or less, from the viewpoint of scrubbing resistance and flexibility. Is more preferable, and 110 mN / cm or less is further preferable.
  • the "loop stiffness" in the present specification is a stress required to bend a sample of a film body such as a film into a loop shape and compress it by a predetermined amount in the diameter direction of the loop, and the film body depends on the value of the loop stiffness. It evaluates the strength of the body. In the present specification, it is required to measure the compression speed at 3.3 mm / sec using a loop stiffness tester (manufactured by Toyo Seiki Co., Ltd.) with a sample width of 20 mm and a sample length of 150 mm and crush the loop by 30 mm. The stress was measured. As the detailed conditions for the loop stiffness measurement, the column of Examples described later and the method of FIG. 2 are adopted.
  • the thickness of the multilayer film (d) is 40 ⁇ m or less, more preferably 35 ⁇ m or less, further preferably 30 ⁇ m or less, and (e) the tensile elastic modulus is 500 MPa or less, more preferably 400 MPa or less, still more preferably 300 MPa or less.
  • the multilayer film may be composed of at least two layers, an outer layer and an adhesive layer. Further, the multilayer film may have a three-layer structure of an adhesive layer / an intermediate layer / an outer layer in which an intermediate layer is provided between the outer layer and the adhesive layer. Alternatively, the multilayer film may have four or 5 layers of an adhesive layer / a blue layer / an intermediate layer / a blue layer / an outer layer in which a blue layer is further provided between the adhesive layer and the intermediate layer and / or between the outer layer and the intermediate layer. It may have a layered structure. Needless to say, other layers other than the above may be further included.
  • the multilayer film in the present embodiment may be a resin in which at least two layers of the outer layer and the adhesive layer constituting the multilayer film are the same resin (type 1 two layers) or different resins (type 2 two layers). .. Further, in the embodiment in which the intermediate layer is provided between the outer layer and the adhesive layer, the three layers of the adhesive layer / intermediate layer / outer layer may be the same resin or different resins (three types and three layers). .. Further, in the case where the embodiment has a five-layer structure of an adhesive layer / a blue layer / an intermediate layer / a blue layer / an outer layer, the five layers may be the same resin or different resins (five types and five layers). May be good.
  • a method for measuring the layer ratio and average thickness of each layer of the multilayer film in the case of a multilayer film, for example, two polypropylene sheets (size: 5 mm ⁇ 10 mm) having a thickness of 1 mm coated with EVA adhesive are prepared. Then, the multilayer film is sandwiched between the two sheets so that the EVA adhesive surface is on the inside and integrated, and a section of 5 ⁇ m to 10 ⁇ m is taken by a microtome, and the cut surface of the section is taken by a polarizing microscope. Can be enlarged and the thickness of the adhesive layer can be measured using image analysis software.
  • the layer ratio and average thickness are preferably the melting peaks of each layer according to the DSC measurement method described later after separating the multilayer film from the base fabric. It can be calculated from the area (melting energy).
  • the adhesive layer in the present embodiment is a layer that adheres to the surface of the base fabric, and more specifically, is a layer that receives heat from a heating roll during the heat laminating process, melts, and adheres to the surface of the base fabric.
  • the adhesive layer in the present embodiment contains a first resin having a hydrogen bonding ability, and the absolute value of the difference ( ⁇ HSP) in the Hansen solubility parameter between the base cloth and the first resin is 5 MPa 0.5 or less. ..
  • ⁇ HSP the absolute value of the difference
  • the absolute value ( ⁇ HSP) of the difference between the Hansen solubility parameter (HSP) of the first resin and the Hansen solubility parameter (HSP) of the synthetic fiber constituting the base fabric is It is 5 MPa 0.5 or less, preferably 4.5 MPa 0.5 or less, and more preferably 4.0 MPa 0.5 or less.
  • the unit of ⁇ HSP is MPa 0.5 .
  • the value of ⁇ HSP is calculated using “Winmostar version 9.3.0”. That is, the estimated value of HSP is the HSP value of the first resin, for example, a polyamide-based copolymer (PA6 / 12), and the HSP value of the polyamide 66 fiber most preferably used as the material of the base fabric. Estimated using “3.0", the preferred range of ⁇ HSP was determined.
  • the "Hansen solubility parameter (HSP) of the first resin” refers to the HSP of the first resin having a hydrogen bonding ability.
  • the "Hansen solubility parameter (HSP) of synthetic fibers” refers to the HSP of synthetic fibers contained in the base fabric. When a plurality of synthetic fibers are present in the base fabric, the HSP of each fiber component (total of 100% by mass) can be multiplied by the component ratio to obtain the total value.
  • the adhesive layer in this embodiment is composed of an adhesive layer component.
  • the adhesive layer component contains the first resin, and if necessary, contains the resin A and / or various additives described later.
  • the glass transition temperature of the adhesive layer in this embodiment is preferably 0 ° C to 80 ° C.
  • a more preferable glass transition temperature of the adhesive layer is 20 ° C. to 70 ° C.
  • a more preferable glass transition temperature of the adhesive layer is 30 ° C. to 60 ° C. This has the effect of blocking resistance and film formation stability.
  • “the glass transition temperature of the adhesive layer is 0 ° C. or higher and 80 ° C.
  • the glass transition temperature of the adhesive layer is 0 ° C. or higher, it is possible to prevent sticking to the roll and blocking between the outer layer of the wound film and the adhesive layer in the film forming process.
  • the glass transition temperature of the adhesive layer is 80 ° C.
  • the glass transition temperature of the first resin contained as a component of the adhesive layer is 0 ° C. or higher.
  • the first resin in the present embodiment may be a mixture of a single resin or a blend of a plurality of resins, or may be a mixture of other polar components.
  • the first resin has a glass transition temperature of 0 ° C. to 80 ° C., more preferably 20 ° C. to 70 ° C., and even more preferably 30 ° C. to 60 ° C. When a first resin having a glass transition temperature of 0 ° C. or higher is used for the adhesive layer, higher blocking resistance and film formation stability can be obtained.
  • the glass transition temperature can be measured by the method described in Examples described later. More specifically, the method for measuring the glass transition temperature of the adhesive layer is to prepare a sheet body having a thickness of 0.9 mm from the adhesive layer component and then use a dynamic viscoelasticity measuring machine (“MCR301” manufactured by Anton Pearl) for loss. The tangent tan ⁇ is measured, and the peak temperature of the loss tangent tan ⁇ is taken as the glass transition temperature.
  • MCR301 dynamic viscoelasticity measuring machine manufactured by Anton Pearl
  • the glass transition temperature of each first resin may be the same or different.
  • the adhesive layer component may contain a plurality of types of resins (for example, a polyamide resin or resin A described later), or the adhesive layer component may contain various additives.
  • the melting point of the first resin is preferably 100 ° C. to 160 ° C., more preferably 110 ° C. to 150 ° C., and even more preferably 120 ° C. to 140 ° C.
  • the melting point can be measured by the method described in Examples described later.
  • the melting points of the first resins may be the same or different.
  • the melting peak temperature on the high temperature side of the first resin is preferably 100 ° C. to 160 ° C., more preferably 110 ° C. to 150 ° C. Is.
  • first resin in the present specification means a resin having a hydrogen bonding ability (amino group, amide bond, hydroxyl group, etc.).
  • the adhesive layer or the adhesive layer component may contain another resin (may be referred to as "resin A" in the present specification) in addition to the first resin.
  • the first resin and the resin A may be one kind or a plurality of kinds.
  • the adhesive layer or the adhesive layer component may be composed of only the first resin, or may further contain the resin A and / or the additive described later, but the total amount of the adhesive layer or the adhesive layer component is 100.
  • the first resin is preferably contained in an amount of 30% by mass or more, more preferably 40% by mass or more, and further preferably 50% by mass to 100% by mass with respect to the mass%. , 60% by mass or more and 98% by mass or less is more preferable.
  • the glass transition temperature of the first resin is preferably 80 ° C. or lower, more preferably 70 ° C. or lower, still more preferably 60 ° C. or lower, and 30% by mass or more with respect to the adhesive layer (100% by mass). When it is preferably contained in an amount of 50% by mass or more, more preferably 70% by mass or more, excellent flexibility and adhesive strength are exhibited.
  • the first resin examples include polyamide-based resins and polyurethane-based resins, and the polyamide-based resin can be preferably used from the viewpoint of hydrolyzability.
  • the polyamide-based resin examples include polyamide 4 (hereinafter, also referred to as PA4, and other polyamides are also referred to by PA numbers), polyamide 6 (PA6), polyamide 66 (PA66), and polyamide 11 (PA11).
  • PA4 polyamide 4
  • PA6 polyamide 6
  • PA66 polyamide 66
  • PA11 polyamide 11
  • PA12 Polyamide 12
  • PA46 Polyamide 46
  • PA66 Polyamide 66
  • PA610 Polyamide 610
  • Examples include based polyamide.
  • PA6 / 12 (copolymer of polyamide 6 and polyamide 12), PA6 / 66/12, PA6 / 66/610/12, dimer acid-based polyamide It is more preferably PA6 / 12. Further, the PA6 / 12 contains a component in which the polyamide 6 is 5% by mass to 70% by mass and the polyamide 12 in an amount of 95% by mass to 30% by mass from the viewpoints of adhesive strength, laminating suitability, and blocking resistance during film formation.
  • polyamide-based copolymer composed of a component of%, and more preferably a polyamide-based copolymer composed of a component in which polyamide 6 is 10% by mass to 60% by mass and polyamide 12 in an amount of 90% by mass to 40% by mass. More preferably, it is a copolymer.
  • Examples of the above-mentioned polyamide resin include random copolymers, alternating copolymers, block copolymers, and graft copolymers, and block copolymers or random copolymers are more preferable.
  • thermoplastic polyurethane elastomer is preferable from the viewpoint of flexibility, and among them, a polyether-based thermoplastic polyurethane having relatively good hydrolyzability is preferable.
  • the content of each repeating unit in the polyamide resin can be calculated from the integral ratio of the spectrum measured by a nuclear magnetic resonance (1 H-NMR, 13 C-NMR) measuring device.
  • the viscosity number of the polyamide resin is preferably 50 ml / g to 200 ml / g, more preferably 80 ml / g to 180 ml / g, and further preferably 100 ml / g to 150 ml from the viewpoint of film forming property. / G.
  • the viscosity number is a value obtained according to ISO307, and is the viscosity number when 0.5% by mass of the polyamide resin is dissolved in a 96% sulfuric acid aqueous solution.
  • the first resin contained in the adhesive layer may be a mixed resin layer containing the resin A described later in addition to the polyamide resin or the polyurethane resin.
  • the resin A preferably includes acid-modified polyolefin, ionomer, thermoplastic polyamide elastomer and the like. From the viewpoint of flexibility and adhesiveness in a low temperature environment, it is preferable that the glass transition temperature is less than 0 ° C. and the melting point is in the range of 80 ° C. to 160 ° C. Further, the mass ratio of the resin A in the adhesive layer or the adhesive layer component (100% by mass) is preferably 0% by mass to 70% by mass, more preferably 5% by mass to 60% by mass from the viewpoint of adhesiveness. %, More preferably 10% by mass to 50% by mass.
  • the adhesive layer or the adhesive layer component is an organic solvent, an antiblocking agent, a lubricant, a crystal nucleating agent, a flame retardant, an antistatic agent, an antioxidant, an ultraviolet absorber, a light stabilizer, a coloring agent, and a filler.
  • Various additives such as the above may be appropriately contained as long as the practical characteristics are not impaired.
  • anti-blocking agent examples include organic particles such as crosslinked polystyrene, crosslinked acrylic (PMMA) resin, and fluorine (PTFE) particles, silica particles, and inorganic particles such as kaolin and calcium carbonate.
  • crystal nucleating agent examples include talc, alumina, kaolin, and high melting point polyamides (for example, polyamides having a melting point of more than 160 ° C.).
  • lubricant include aliphatic amides, metal soaps, and ultra-high molecular weight silicones.
  • the mass ratio of the additive in the adhesive layer or the adhesive layer component (100% by mass) is preferably 20% by mass or less, more preferably 10% by mass or less, still more preferably. It is 5% by mass or less.
  • the average thickness of the adhesive layer in the present embodiment is preferably 1 ⁇ m to 20 ⁇ m, more preferably 2 ⁇ m to 15 ⁇ m, and further preferably 3 ⁇ m to 10 ⁇ m from the viewpoint of adhesive strength and flexibility.
  • the average thickness of the adhesive layer in the present specification in the case of a multilayer film, for example, two polypropylene sheets (size: 5 mm ⁇ 10 mm) having a thickness of 1 mm coated with EVA adhesive are prepared, and the multilayer film is prepared.
  • the EVA adhesive surface was on the inside and integrated, and a section of 5 ⁇ m to 10 ⁇ m was taken by a microtome, and the cut surface of the section was enlarged by a polarization microscope.
  • the thickness of the adhesive layer can be measured using image analysis software.
  • the layer ratio of the peeled multilayer film to the multilayer film can be determined by the melting point peak area (melting energy) derived from the adhesive layer by the DSC measurement method described later.
  • the outer layer in the present embodiment is a layer facing the adhesive layer and corresponding to the outermost surface of the airbag. Further, the outer layer is preferably made of a resin having a melting point higher than that of the adhesive layer from the viewpoint of preventing fusion during thermal laminating processing and suppressing pinholes. Specifically, the outer layer in the present embodiment is a second resin having a melting point of 20 ° C. or higher, more preferably 30 ° C. or higher, still more preferably 40 ° C. or higher than the melting point of the first resin contained in the adhesive layer. It is preferable to contain it.
  • the melting point of the second resin is preferably 170 ° C. to 240 ° C., more preferably 180 ° C. to 230 ° C. or lower, and even more preferably 190 ° C. to 220 ° C.
  • the melting point can be measured by the above method and the method described in Examples described later.
  • the second resin may be a mixture obtained by blending a single resin or a plurality of resins as in the case of the first resin, or may be a mixture blended with other polar components.
  • the melting points of the second resins may be the same or different.
  • the melting peak temperature on the high temperature side of the second resin is preferably 170 ° C. to 240 ° C., more preferably 180 ° C. to 230 ° C. Is.
  • the second resin has a glass transition temperature of 80 ° C. or lower, more preferably 70 ° C. or lower, and even more preferably 60 ° C. or lower.
  • the glass transition temperature can be measured by the method described in Examples described later.
  • the glass transition temperature of each second resin may be the same or different.
  • the second resin examples include polyamide resins, polyester resins, and polyurethane resins from the viewpoint of heat resistance and flexibility.
  • the polyamide-based resin is preferably a polyamide-based copolymer and / or a polyamide-based elastomer.
  • thermoplastic polyamide elastomer examples thereof include a polyamide-based elastomer composed of a component or a polyester component (so-called thermoplastic polyamide elastomer), and a dimer acid-based polyamide-based elastomer composed of a dimer acid-based polyamide and a polyether component.
  • These polyamide-based resins and thermoplastic polyamide elastomers may be used alone or as a mixture of a plurality of resins. From the viewpoint of flexibility and heat resistance, PA6 / 66, PA6 / 12, PA6 / 66/12, PA1010, thermoplastic polyamide elastomer or dimer acid-based polyamide elastomer are more preferable, and PA6 / 66 and PA6 / 66 are more preferable. / 12, PA1010 or thermoplastic polyamide elastomer.
  • polyester resin examples include a thermoplastic polyester elastomer having a polyester component in the hard segment and a polyether component or a polyester component in the soft segment, a thermoplastic ester / ester elastomer, and the like.
  • a polyurethane resin can be mentioned.
  • a thermoplastic polyurethane elastomer is preferable from the viewpoint of flexibility. More preferably, a polyester-based or polyether-based thermoplastic polyurethane elastomer can be mentioned, and more preferably, a polyether-based thermoplastic polyurethane elastomer can be mentioned from the viewpoint of hydrolyzability.
  • the average thickness of the outer layer in the present embodiment is preferably 2 ⁇ m to 20 ⁇ m, more preferably 3 ⁇ m to 15 ⁇ m, and further preferably 5 ⁇ m to 10 ⁇ m from the viewpoint of durability, flexibility, and pinhole suppression during thermal laminating processing.
  • the method for measuring the average thickness of the outer layer in the present specification can be measured by the same method as the above-mentioned "method for measuring the thickness of the adhesive layer”.
  • the multilayer complex in the present embodiment may have an intermediate layer provided between the adhesive layer and the outer layer.
  • the intermediate layer preferably contains a third resin from the viewpoint of flexibility.
  • the third resin is preferably a polyolefin-based resin having polarity.
  • Specific examples include polyethylene such as low density polyethylene (LDPE), high density polyethylene (HDPE), or linear low density polyethylene (LLDPE), ethylene vinyl acetate copolymer (EVA), polyolefin block copolymer (OBC), and the like.
  • thermoplastic elastomer Polyethylene-based thermoplastic elastomer (TPO), ionomer, acid-modified polyolefin-based resin, thermoplastic polyamide elastomer (TPAE), thermoplastic polyester elastomer (TPEE), thermoplastic polyurethane elastomer (TPUE), thermoplastic styrene-based elastomer, styrene-butadiene
  • TPO Polyethylene-based thermoplastic elastomer
  • TPAE thermoplastic polyamide elastomer
  • TPEE thermoplastic polyester elastomer
  • TPUE thermoplastic polyurethane elastomer
  • thermoplastic styrene-based elastomer thermoplastic styrene-based elastomer
  • styrene-butadiene examples thereof include a third resin such as styrene (SBS), hydrogenated styrene / butadiene / styrene e
  • the intermediate layer may be composed of only the third resin, or may further contain the resin A and / or the additive, but the third resin is based on 100% by mass of the total amount of the intermediate layer. Is preferably contained in an amount of 70% by mass or more, and more preferably 80% by mass or more and 100% by mass or less.
  • the average thickness of the intermediate layer in the present embodiment is preferably 1 ⁇ m to 30 ⁇ m, more preferably 2 ⁇ m to 28 ⁇ m, and further preferably 3 ⁇ m to 25 ⁇ m. Flexibility is improved by setting the thickness to 1 ⁇ m or more. Further, when the thickness is 30 ⁇ m or less, the thickness of the outer layer and / and the adhesive layer is relatively increased, and the characteristics such as pinhole resistance and mechanical strength are improved. In the case of a layer configuration including an intermediate layer, the thickness of the intermediate layer can be arbitrarily set within a preferable range according to the required performance of the airbag mounting location.
  • a Blue layer may be further provided as a layer formed for the purpose of adhering each of the above-mentioned layers (outer layer, intermediate layer, adhesive layer). Therefore, it is preferable that a resin having a relatively high polarity is used for the Blue layer.
  • the Blue layer includes, for example, an acid-modified polyolefin resin having a polar functional group such as acid-modified polyethylene or acid-modified polypropylene, and / or a layer containing a polyolefin-based thermoplastic elastomer as a main component, or a polyamide-based thermoplastic elastomer.
  • the Blue layer may be a layer composed of only one type of resin, or may be a layer containing a plurality of types of resins. Further, the resin used for the Blue layer preferably has a heat resistance of 100 ° C. or higher.
  • the above "as a main component” means that 50% by mass or more is contained with respect to 100% by mass of the total amount of the Blue layer. Further, the Blue layer may contain the above-mentioned resin A and / or the above-mentioned additive, if necessary.
  • a Blue layer is provided as a layer for adhering the outer layer and the intermediate layer and / or the adhesive layer and the intermediate layer. May be good.
  • the average thickness of the Blue layer in this embodiment is preferably 1 ⁇ m to 10 ⁇ m, more preferably 1.5 ⁇ m to 8 ⁇ m, and even more preferably 2 ⁇ m to 6 ⁇ m.
  • the thickness of the Blue layer can be arbitrarily set within a preferable range according to the required performance of the airbag mounting location.
  • the base fabric in this embodiment is a support that supports the multilayer film in the multilayer composite for airbags, and maintains a specific tertiary structure when the airbag is deployed.
  • the base fabric in the present embodiment is required to have heat resistance, expandability, strength to withstand rapid expansion or impact, airtightness, and storability, which can withstand high temperature gas from an inflator.
  • Is preferably formed from synthetic fibers, and is preferably a synthetic fiber woven fabric. It is preferable to contain 20% by mass or more of synthetic fibers, and more preferably 50% by mass or more and 100% by mass or less of synthetic fibers with respect to the total amount (100% by mass) of the base cloth.
  • Examples of the synthetic fiber constituting the base cloth or the synthetic fiber woven fabric include polyamide fiber, polyester fiber, polyolefin fiber, chlorine-containing fiber, fluorine-containing fiber, polyacetal fiber, polysulfone fiber, and polyphenylene sulfide fiber.
  • PPS polyether ether ketone fiber
  • PEEK polyether ether ketone fiber
  • total aromatic polyamide fiber total aromatic polyester fiber
  • polyimide fiber polyetherimide fiber
  • polyparaphenylene benzbisoxazole fiber PBO
  • vinylon-based fibers acrylic-based fibers, cellulose-based fibers, silicon carbide-based fibers, alumina-based fibers, glass-based fibers, carbon-based fibers, steel-based fibers, and among them, fibers having a hydrogen-bonding ability are preferable and have strength.
  • Polyamide fibers are more preferable from the viewpoints of specific gravity, cost, adhesive strength with the multilayer film, and the like.
  • the total fineness of the fibers constituting the base fabric is preferably 100 dtex to 1000 dtex, more preferably 210 dtex to 570 dtex, and further preferably 330 dtex to 490 dtex.
  • the total linearity is preferably 100 dtex to 1000 dtex, more preferably 210 dtex to 570 dtex, and further preferably 330 dtex to 490 dtex.
  • the single yarn fineness constituting the base fabric is preferably 0.5 dtex to 8 dtex, and more preferably 1.5 dtex to 3.7 dtex.
  • the single yarn fineness is preferably 0.5 dtex to 8 dtex, and more preferably 1.5 dtex to 3.7 dtex.
  • the cover factor (CF) of the base fabric is preferably 1800 to 2400, more preferably 1900 to 2300, and further preferably 1900 to 2200 from the viewpoint of achieving both mechanical properties and hardness. be.
  • the CF is 1800 or more, the base fabric strength required for the airbag can be obtained.
  • the CF is 2400 or less, the smaller the CF, the softer the base cloth. Further, the smaller the CF, the lighter the basis weight of the woven fabric, so 2300 or less is preferable. Normally, the smaller the CF, the more a ventilation gap is generated between the weaving yarns, but the presence of the laminate coating can suppress the ventilation.
  • CF is represented by the following mathematical formula (1).
  • the average thickness of the base fabric in the present embodiment is preferably 0.15 mm to 0.45 mm, more preferably 0.17 mm to 0.40 mm, and further preferably 0.20 mm to 0.35 mm.
  • the thickness is measured in accordance with ISO5084 at a set pressure of 1 kPa and a stylus ⁇ 10.5 mm.
  • the flexibility of the multilayer film has a great influence on the durability (scrub resistance).
  • an airbag multilayer composite also referred to as a Lami base fabric
  • a highly flexible multilayer film is laminated on a base fabric
  • the drag force of the multilayer film generated when the multilayer composite for airbag expands and contracts increases in proportion to the thickness, and the multilayer film follows the deformation of the base fabric. It is speculated that it may be difficult.
  • the thinner the multilayer film the better the flexibility and the scrubbing resistance.
  • the average thickness of the multilayer film in this embodiment is one of the important factors affecting the flexibility, and has a great influence on the result when the scrub test is performed.
  • the upper limit of the average thickness of the multilayer film is preferably 40 ⁇ m or less, more preferably 35 ⁇ m or less, still more preferably 30 ⁇ m or less. be.
  • the lower limit of the average thickness of the multilayer film is 5 ⁇ m or more, more preferably 10 ⁇ m or more, and further 15 ⁇ m or more.
  • the range of the average thickness of the multilayer film in the present embodiment can be any combination of the above upper limit value and the above lower limit value, but is preferably 5 ⁇ m to 40 ⁇ m, and is preferably 10 ⁇ m to 35 ⁇ m, for example. Is more preferable.
  • the average thickness of the multilayer composite for airbags in the present embodiment can be arbitrarily set in consideration of the required characteristics, flexibility, and mechanical strength at the mounting location, but is preferably 100 ⁇ m to 500 ⁇ m, more preferably 150 ⁇ m to 450 ⁇ m. Hereinafter, it is more preferably 200 ⁇ m to 400 ⁇ m.
  • the thickness is measured in accordance with ISO5084 at a set pressure of 1 kPa and a stylus ⁇ 10.5 mm.
  • the lower limit of the layer ratio of the adhesive layer is 1% or more. It is preferably 5% or more, more preferably 10% or more.
  • the upper limit of the layer ratio of the adhesive layer is 50% or less, more preferably 40% or less, still more preferably 30% or less from the viewpoint of flexibility.
  • the lower limit of the layer ratio of the outer layer is 5% or more, more preferably 10% or more, still more preferably 20% or more.
  • the upper limit of the layer ratio of the outer layer is 50% or less, more preferably 40% or less, still more preferably 30% or less from the viewpoint of flexibility.
  • the ratio of the average thickness of each layer is preferably in the range of 5% to 95% for the outer layer and 95% to 1% for the adhesive layer. Further, in the case of 3 types and 3 layers, the ratio of the average thickness of each layer is required in the range of 5% to 45% for the outer layer, 90% to 5% for the intermediate layer, and 1% to 90% for the adhesive layer. It can be set according to the characteristics. When 4 types of 5 layers or 5 types of 5 layers are used, the ratio of the average thickness of each layer is 5% to 20% for the outer layer, 1% to 10% for the Blue layer, 40 to 88% for the intermediate layer, and 1% to the Blue layer. It can be set in the range of 10% and the adhesive layer of 1% to 20% according to the required characteristics.
  • the airbag of the present embodiment is preferably a bag body formed from the above-mentioned laminated composite for airbags.
  • the airbag of the present embodiment is for a bag-shaped airbag in which the adhesive layer of the multilayer film and the base cloth are adhered to each other and the multilayer film is laminated on at least one surface of the base cloth. It is preferably a laminated composite.
  • a heat laminating method in which a heating roll is used and continuously laminating by Roll to Roll, a vacuum laminating method in which laminating is performed under reduced pressure, and a belt in which laminating is performed while pressing with a double belt.
  • the laminating method and the like can be mentioned.
  • the adhesive layer of the multilayer film and the synthetic fiber woven fabric (base fabric) are continuously laminated by, for example, a roll laminating method or a belt laminating method in a temperature range of 120 ° C. to 190 ° C. ..
  • the above airbags can be used as airbags for vehicles such as front airbags, side airbags, side curtain airbags, far side airbags, and outside airbags.
  • the side curtain airbag is required to have a function of protecting the occupant from the impact at the time of a side collision and also preventing the occupant from releasing from the side roof when the vehicle rolls over.
  • the far side airbag is provided between the occupant and other occupants to reduce the impact when the vehicle rolls over.
  • the side curtain airbag and the far side airbag are expected to roll over, so that they need to maintain an expanded state for a longer period of time than the front airbag. It is desirable that the adhesive strength between the sex material and the base fabric is even higher, and the multilayer composite for an airbag of the present embodiment can be more preferably used as the barrier material.
  • the raw materials used in Examples and Comparative Examples and their notations are shown below.
  • the glass transition temperature (sometimes referred to as Tg) and melting point (sometimes referred to as Tm) of each raw material are values obtained by using a dynamic viscoelasticity measuring machine and DSC described later.
  • additives added to the adhesive layer are shown below.
  • -AB Anti-blocking agent (AB agent): Product name "Silton JC-70” (manufactured by Mizusawa Industrial Chemicals), Ingredient name: Sodium calcium aluminosilicate, Shape: Spherical, Average particle size: 7 ⁇ m -NA (Crystal Nucleating Agent (NA Agent)): Product Name "Micro Ace P-8" (manufactured by Nippon Talc), Ingredient Name: Talc, Shape: Scale-like, Average Particle Size: 3.3 ⁇ m
  • a master batch containing 5% by mass of the additive is prepared in advance by a twin-screw extruder "TEM-18SS” manufactured by Toshiba Machine Co., Ltd.
  • a pelletized product was prepared by melt-kneading under the conditions of (masterbatch) and dry-blended with the pellet (masterbatch) and the resin component. Then, a multilayer film was formed by an inflation method by the method described later.
  • the sizes of the base cloth 2 and the multilayer film 1c (1a, 1b) are as follows.
  • the multilayer films 1c (1a, 1b) were collected in a size of 250 mm in the MD (Machine Direction) direction and 110 mm in the TD (Transverse Direction) direction.
  • the base cloth was collected at 260 mm in the warp direction and 120 mm in the weft direction.
  • the MD direction of the collected multilayer film and the warp direction of the base cloth were oriented in the same direction, and the adhesive layer 1b of the multilayer film was overlapped so as to be in contact with the base cloth 2.
  • the multilayer film 1c (1a, 1b) is in the TD direction (weft of the base cloth 2) with respect to the surface length direction (width of 540 mm) of the heating roll 17 and the pressure roll 16.
  • the direction) is aligned so that the multilayer films 1c (1a, 1b) are in contact with the pressure roll 16, and the multilayer film 1c (1a, 1b) is pinched between the pressure roll 16 and the heating roll 17 of the laminator. , Prepared with lami processing.
  • the sample for the adhesive strength (180 ° T-shaped adhesive strength) is a pressure roll at the stage where about 5 cm from the tip of the multilayer film 1c (1a, 1b) and the base cloth 2 is laminating under the above-mentioned conditions. 16 and the heating roll 17 were opened, and the extracted one was prepared.
  • ⁇ Roll laminator specifications> ⁇ Metal heating roll diameter: ⁇ 100mm Roll surface length: 540mm Surface: Mirror surface processing ⁇ Pressurized roll diameter: ⁇ 100mm Roll surface length: 540mm Surface: Silicone rubber lining processing ⁇ Pressure cylinder diameter: ⁇ 50mm x 2 ⁇ Lami processing conditions> ⁇ Temperature 160 °C ⁇ Linear pressure 15N / cm (set gauge pressure 0.2MPa) ⁇ Processing speed 0.3m / min
  • a 150 ⁇ m-thick sheet was prepared using the components of each layer constituting the multilayer film with a press molding machine “P2-30T-400” manufactured by Toyo Seiki Seisakusho, and a weight of 10 mg was collected and DSC (“Parking Elmer” manufactured by Parking Elmer) was used. Diamond DSC ”) was used, and the melting peak temperature obtained at a heating rate of 10 ° C./min was defined as the melting point in accordance with JIS K 7121.
  • the press molding conditions samples were taken according to the following conditions.
  • the loop stiffness of the Ny66 base cloth was measured by collecting measurement samples of the same size in an untreated state with no history of heat and pressure by the laminator. As the value of the loop stiffness, the average value of the values of the five sheets measured at different locations was obtained and converted into a width of 1 cm.
  • a sample can be taken in the same manner as described above using a portion that is not deformed or damaged, and the loop stiffness can be determined. Further, the loop stiffness of the base fabric in the multilayer composite is lower than that in the untreated state due to the history of heat and pressure during the laminating process and the opening of the base fabric due to the peeling of the multilayer film. There is.
  • the loop stiffness of the base fabric itself is calculated using the following procedures (a) to (d).
  • (A) The components of the base fabric in the multilayer complex for airbags are specified by infrared spectroscopy (FT-IR).
  • (B) The fiber structure (texture, thickness, fineness, fiber density) is specified by analyzing the cross section of the multilayer complex by SEM.
  • (D) The loop stiffness of the so-called replication base fabric separately prepared in (c) above is measured.
  • the method for measuring the thickness of the multilayer film was carried out using a dial gauge (SM-1201 manufactured by Teclock, stylus ⁇ 2).
  • a dial gauge (SM-1201 manufactured by Teclock, stylus ⁇ 2).
  • the layer ratio of the multilayer film two polypropylene sheets (size: 5 mm ⁇ 10 mm) having a thickness of 1 mm coated with EVA adhesive on one side are prepared, and the multilayer film is placed between the two sheets. , EVA adhesive surface is sandwiched and integrated so that it is on the inside, and a section with a thickness of 5 ⁇ m to 10 ⁇ m is taken from this cross section by a microtome, and the cut surface of the section is enlarged by a polarizing microscope, and image analysis software is used. Allows the thickness of each layer to be measured.
  • FT-IR Infrared spectroscopy
  • the solvent and the solid content can be separated by an evaporator, and the solid content can be determined according to the above-mentioned method for measuring the melting point.
  • Example 1 It is composed of an outer layer (20%) / Blue layer (10%) / intermediate layer (50%) / Blue layer (10%) / adhesive layer (10%), and the adhesive layer is composed of CoPA1 (PA6 / 12).
  • a multilayer film of 4 types and 5 layers having a thickness of 20 ⁇ m using a polyamide-based copolymer was obtained.
  • the numerical values in parentheses () indicate the layer ratio.
  • a body (1) was prepared and its performance was evaluated.
  • Table 1 shows the configurations of the multilayer film and the multilayer composite for airbags and the evaluation results thereof. From the results in Table 1, good results were obtained in the flexibility, adhesiveness, and scrub resistance of the multilayer composite for airbag of Example 1.
  • Example 2 In Example 1, the layer ratio of the adhesive layer was increased from 10% to 20%, the intermediate layer was reduced from 50% to 40%, and a four-kind five-layer film having a thickness of 15 ⁇ m was obtained.
  • a multilayer composite (2) for airbags was produced in the same manner as in Example 1, and its performance was evaluated. Table 1 shows the configurations of the multilayer film and the multilayer composite for airbags and the evaluation results thereof. From the experimental results of the airbag multilayer complex (2), the flexibility (difference in loop stiffness) was improved as compared with the airbag multilayer complex (1) of Example 1, thereby improving the scrubbing resistance. It was confirmed that there was.
  • Example 3 In Example 1, the layer ratio of the adhesive layer was increased from 10% to 50%, and the intermediate layer was reduced from 50% to 10% to obtain a four-kind five-layer film having a thickness of 20 ⁇ m.
  • a multilayer composite (3) for airbags was prepared in the same manner as in Example 1, and its performance was evaluated. Table 1 shows the configurations of the multilayer film and the multilayer composite for airbags and the evaluation results thereof. In the experimental results of this multilayer complex for airbags (3), the flexibility was lower than that of Example 1, and the scrubbing resistance was also lowered accordingly, but the performance of 600 times or more was obtained.
  • Example 4 Using a composition in which 50% by mass of m-PE1 (acid-modified PE) was blended in the adhesive layer, a 4-type 5-layer multilayer film having a thickness of 40 ⁇ m was obtained. Using this multilayer film, a multilayer composite (4) for airbags was prepared in the same manner as in Example 1, and its performance was evaluated. Table 1 shows the configurations of the multilayer film and the multilayer composite for airbags and the evaluation results thereof. According to the experimental results of this multilayer composite for airbags (4), even if m-PE1 was blended with the adhesive layer, the adhesive strength did not decrease, and the scrubbing resistance was obtained 600 times or more.
  • Example 5 A two-kind two-layer multilayer film having a thickness of 20 ⁇ m composed of an outer layer and an adhesive layer was obtained. Using this multilayer film, a multilayer composite (5) for airbags was prepared in the same manner as in Example 1, and its performance was evaluated. Table 1 shows the configurations of the multilayer film and the multilayer composite for airbags and the evaluation results thereof. In the experimental results of this multilayer composite for airbag (5), a decrease in flexibility was observed as compared with Example 1, and a scrubbing resistance was also decreased accordingly, but the performance was 600 times or more.
  • Example 6 A multilayer film was produced in the same manner as in Example 5 except that H-TPAE (high melting point thermoplastic polyamide elastomer) was used for the outer layer. Using this multilayer film, a multilayer composite (6) for airbags was prepared in the same manner as in Example 1, and its performance was evaluated. Table 1 shows the configurations of the multilayer film and the multilayer composite for airbags and the evaluation results thereof. In the experimental results of this multilayer composite for airbag (6), the flexibility, adhesiveness, and scrubbing resistance were almost the same as those of Example 5.
  • H-TPAE high melting point thermoplastic polyamide elastomer
  • Example 7 It is a three-kind three-layer film composed of an outer layer (20%) / intermediate layer (70%) / adhesive layer (10%).
  • the outer layer is PA6 / 66
  • the intermediate layer is m-PE
  • the adhesive layer is Co-PA1.
  • Table 1 shows the configurations of the multilayer film and the multilayer composite for airbags and the evaluation results thereof. In the experimental results of this multilayer composite for airbag (7), the flexibility, adhesiveness, and scrubbing resistance were equal to or higher than those of Example 1.
  • Example 8 A three-kind three-layer film having a thickness of 20 ⁇ m was produced in the same manner as in Example 7 except that Co-PA2 was used as the adhesive layer. Using this multilayer film, a multilayer composite for airbags (8) was produced in the same manner as in Example 1, and its performance was evaluated. Table 1 shows the configurations of the multilayer film and the multilayer composite for airbags and the evaluation results thereof. In the experimental results of this multilayer complex for airbags (8), the scrubbing resistance was good because the flexibility of the film was improved as compared with Example 7.
  • Comparative Example 1 A four-kind five-layer multilayer film having the same layer structure as in Example 1 was produced except that the thickness was changed from 20 ⁇ m to 40 ⁇ m. Using this multilayer film, a multilayer composite (A) for an airbag of Comparative Example 1 was prepared in the same manner as in Example 1, and its performance was evaluated. Table 1 shows the configurations of the multilayer film and the multilayer composite (A) and the evaluation results thereof. In the experimental results of Comparative Example 1, as compared with Example 1, the flexibility was reduced by the amount of the increase in thickness, and the scrubbing resistance was reduced to 275 times accordingly.
  • Example 2 The same multilayer film as in Example 1 was obtained except that the layer ratio of the adhesive layer was increased from 10% to 40% in Example 1 and the thickness was increased from 20 ⁇ m to 35 ⁇ m.
  • a multilayer composite (B) for an airbag of Comparative Example 1 was prepared in the same manner as in Example 1, and its performance was evaluated.
  • Table 1 shows the configurations of the multilayer film and the multilayer composite (B) and the evaluation results thereof.
  • Comparative Example 2 since the layer ratio and thickness of the adhesive layer were increased as compared with Example 1, the flexibility was lowered, and the scrubbing resistance was lowered to 325 times accordingly.
  • Comparative Example 3 A two-kind two-layer multilayer film having a thickness of 40 ⁇ m composed of H-TPAE (high melting point thermoplastic polyamide elastomer) and L-TPAE (low melting point thermoplastic polyamide elastomer) was obtained. Using this multilayer film, a multilayer composite (C) for airbags of Comparative Example 3 was prepared in the same manner as in Example 1, and its performance was evaluated. Table 1 shows the configurations of the multilayer film and the multilayer composite (C) and their evaluation results. In the experimental results of Comparative Example 3, the flexibility was inferior and the scrubbing resistance was reduced to 200 times.
  • H-TPAE high melting point thermoplastic polyamide elastomer
  • L-TPAE low melting point thermoplastic polyamide elastomer
  • the scrubbing resistance depends on the adhesive strength and the flexibility of the film, the adhesive strength is in the range of 5 N / cm or more, and the flexibility of the film (Lami base cloth-base cloth) is in the range of 130 mN / cm or less. By doing so, scrubbing resistance (durability) that can withstand practical use can be obtained.
  • the multilayer complex of the present disclosure is excellent in adhesiveness, airtightness, durability, flexibility, and light weight, and can realize an inexpensive manufacturing cost. Therefore, it is suitably used for airbag applications such as those for vehicles. Can be done.
  • Multilayer composite laminate 1a Multilayer film (outer layer) 1b .
  • Multilayer film (adhesive layer) 1c ⁇ ⁇ ⁇ Multilayer film 2 ⁇ ⁇ ⁇ ⁇ Base cloth 3 ⁇ ⁇ ⁇ ⁇ Indenter 4 ⁇ ⁇ ⁇ ⁇ Loop stiffness chuck 5 ⁇ ⁇ ⁇ ⁇ Sample stand 6 ⁇ ⁇ ⁇ ⁇ Reinforcing tape 7 ⁇ ⁇ ⁇ ⁇ ⁇ Tensile tester Chuck 8 ... Multi-layer die 9 ... Air ring 10 ... Deflator (free roll) 11 ... First pinch drive roll 12 ... Guide roll (free roll) 13 ... Second pinch drive roll 14 ... Touch roll (free roll) 15 ... Winding drive roll 16 ... Pressurized roll (silicone rubber lining processing) 17 ... Metal heating roll (mirror surface processing)

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  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
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  • Laminated Bodies (AREA)

Abstract

La présente divulgation concerne un corps composite multicouche pour coussin de sécurité gonflable ayant une durabilité supérieure obtenue par commande de flexibilité et d'adhésivité entre une couche adhésive et un tissu de base dans des plages prédéterminées, et un coussin de sécurité gonflable l'utilisant. La présente invention concerne un corps composite multicouche pour coussin de sécurité gonflable comportant un tissu de base et un film multicouche comprenant une couche externe et une couche adhésive jointe à une surface du tissu de base, caractérisé en ce que : une force adhésive d'une interface entre le film multicouche et le tissu de base est supérieure ou égale à 5 N/cm ; une différence de rigidité de boucle entre le corps composite multicouche pour coussin de sécurité gonflable et le tissu de base n'est pas supérieure à 130 mN/cm ; la couche adhésive contient une première résine ayant une capacité de liaison à l'hydrogène ; et une différence de paramètre de solubilité de Hansen (ΔHSP) entre le tissu de base et la première résine n'est pas supérieure à 5 MPa0,5.
PCT/JP2021/004459 2020-02-07 2021-02-05 Corps composite multicouche pour coussin de sécurité gonflable et coussin de sécurité gonflable WO2021157733A1 (fr)

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JP2021576204A JP7308991B2 (ja) 2020-02-07 2021-02-05 エアバッグ用多層複合体及びエアバッグ
EP21750362.2A EP4101634A4 (fr) 2020-02-07 2021-02-05 Corps composite multicouche pour coussin de sécurité gonflable et coussin de sécurité gonflable
US17/760,031 US20230052516A1 (en) 2020-02-07 2021-02-05 Airbag multilayer complex and airbag
CN202180010262.4A CN115003562A (zh) 2020-02-07 2021-02-05 气囊用多层复合体和气囊

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022168961A1 (fr) * 2021-02-05 2022-08-11 旭化成株式会社 Composite multicouche pour coussin de sécurité gonflable

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002500576A (ja) * 1997-03-14 2002-01-08 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー ポリアミドフィルムおよび布を含む複合シート材料
JP2019001164A (ja) * 2017-06-16 2019-01-10 日東電工株式会社 積層体の製造方法、積層体、及びエアバッグ
WO2019039555A1 (fr) * 2017-08-24 2019-02-28 日東電工株式会社 Film multicouche, stratifié, procédé de production pour stratifié, et coussin de sécurité gonflable
WO2020032032A1 (fr) * 2018-08-08 2020-02-13 旭化成株式会社 Film multicouche pour coussins de sécurité gonflables, et coussin de sécurité gonflable

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4604359B2 (ja) * 2001-01-26 2011-01-05 東レ株式会社 エアバッグ基布およびエアバッグ
JP2003246253A (ja) * 2002-02-22 2003-09-02 Fujimori Kogyo Co Ltd エアバッグ用シート、その製造方法及びエアバッグ
DE50304487D1 (de) * 2003-09-16 2006-09-14 Collano Xiro Ag Verbundschichtmaterial insbesondere für einen Airbag, und Verfahren zu dessen Herstellung, Airbag, Passivrückhaltesysteme mit Airbag, sowie gasdichter Polyamidpolymerfilm
JP2008150754A (ja) * 2006-12-20 2008-07-03 Toray Ind Inc エアバッグ用基布およびその製造方法
KR101590152B1 (ko) * 2012-12-31 2016-01-29 코오롱인더스트리 주식회사 에어백용 라미네이팅 원단
JP2017036530A (ja) * 2015-08-13 2017-02-16 住商エアバッグ・システムズ株式会社 エアバッグ用基布
JP2018002926A (ja) * 2016-07-05 2018-01-11 Ｍｃｐｐイノベーション合同会社 熱可塑性エラストマー組成物及びエアバッグ収納カバー

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002500576A (ja) * 1997-03-14 2002-01-08 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー ポリアミドフィルムおよび布を含む複合シート材料
JP2019001164A (ja) * 2017-06-16 2019-01-10 日東電工株式会社 積層体の製造方法、積層体、及びエアバッグ
WO2019039555A1 (fr) * 2017-08-24 2019-02-28 日東電工株式会社 Film multicouche, stratifié, procédé de production pour stratifié, et coussin de sécurité gonflable
WO2020032032A1 (fr) * 2018-08-08 2020-02-13 旭化成株式会社 Film multicouche pour coussins de sécurité gonflables, et coussin de sécurité gonflable

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4101634A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022168961A1 (fr) * 2021-02-05 2022-08-11 旭化成株式会社 Composite multicouche pour coussin de sécurité gonflable
JP7470219B2 (ja) 2021-02-05 2024-04-17 旭化成株式会社 エアバッグ用多層複合体

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EP4101634A1 (fr) 2022-12-14
JPWO2021157733A1 (fr) 2021-08-12

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